Supporting device for large part of railway vehicle body

Abstract

The utility model discloses a large component supporting device for a railway vehicle body, and belongs to the technical field of railway vehicle body steel structure production. The device is provided with a cross beam and at least two upright post components, the stand column assembly comprises an outer stand column and an inner stand column which is arranged in the outer stand column in a sleeved mode and can stretch out and draw back along the vertical axis. The locking structure can lock the inner upright post and the outer upright post at any position; mounting holes used for being fixedly connected with an infrastructure are formed in the bottom end of the outer stand column in the circumferential direction; the top end of the inner stand column is fixedly connected with a bracket; the supporting seat is provided with a supporting groove with an upward opening, and through channels communicated with the supporting groove are symmetrically formed in the two ends of the supporting seat so that the two stand column assemblies can horizontally support the cross beam in a back-to-back or relative displacement mode. And the beneficial effects of safety production and production efficiency improvement are achieved.

Description

Technical Field

[0001] This utility model relates to the field of steel structure production technology for rail vehicle bodies, and in particular to a support device for large components of rail vehicle bodies. Background Technology

[0002] Currently, in the production of subway car body steel structures, large components such as the roof, underframe, side walls, and end walls require fine processing after assembly and welding on the workbench. In the past, these large components were placed on traditional trestles for operation, requiring workers to perform further fine processing, such as welding small parts on the roof, grinding, and checking for welding leaks. Because the height of the trestles is not adjustable, they cannot be matched with the height and arm length of the operators, making it difficult for them to find a comfortable and safe working angle. This is time-consuming and laborious, resulting in decreased work efficiency. In addition, the trestles need to be hoisted by an overhead crane to move to the next process, which has a low safety factor. Moreover, because the structure of the trestles cannot be changed, they occupy storage space when not in use, wasting storage space. Furthermore, the fixed length of the trestles can be matched with the width of the steel structure when producing or storing large car body steel structures, but when producing or storing small parts, such as end walls, traction beams, and other small components, the original non-adjustable length of the trestles results in some wasted tooling on one or both sides, greatly increasing economic costs.

[0003] Therefore, based on the above problems, how to provide a structurally adjustable support device for large components of rail vehicle bodies has become an important technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects of the existing technology and provide a support device for large components of rail vehicle bodies that is adjustable in width and height, lightweight, easy to move, and meets the purpose of safe production.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] The present invention discloses a support device for large components of a rail vehicle body, comprising:

[0007] A crossbeam and at least two column assemblies;

[0008] The column assembly includes an outer column, an inner column fitted inside the outer column and capable of extending and retracting along a vertical axis; and

[0009] A locking structure capable of locking the inner column and the outer column at any position;

[0010] The bottom end of the outer column is provided with mounting holes for fixing to the infrastructure.

[0011] A support is fixedly connected to the top of the inner column;

[0012] The support has an upward-facing groove, and both ends of the support have symmetrical through channels communicating with the groove, so that the two column assemblies can horizontally support the crossbeam by moving away from each other or relative to each other.

[0013] Furthermore, the locking structure includes a socket and a pin that is plugged into the socket;

[0014] The insertion holes penetrate the outer column and the inner column, and the insertion holes are evenly distributed along the height direction of the inner column. The pin is inserted into the insertion hole of the outer column and cooperates with the insertion holes at different positions on the inner column to lock the height of the inner column.

[0015] Furthermore, the cross-sections of both the inner and outer columns are quadrilateral in shape when projected onto the horizontal plane, and the insertion holes are provided on the opposing surfaces of both the inner and outer columns.

[0016] Furthermore, the outer column is provided with a connection hole, which is connected to the pin via an anti-loss rope.

[0017] Furthermore, a base plate is fixedly connected to the bottom end of the outer column, and the side surfaces of the outer column are all connected to the base plate through stiffening plates. The base plate has mounting holes corresponding to the positions of the stiffening plates.

[0018] Furthermore, it also includes a push rod, which is helically driven by a threaded hole in the bracket. One end of the push rod is placed inside the inner cavity of the inner column, and the other end is placed inside the bracket groove.

[0019] Furthermore, a slot is formed at the top of the push rod for driving the push rod to rotate.

[0020] Furthermore, it also includes a nylon pad, which is fixed to the upper surface of the beam.

[0021] Furthermore, the crossbeam, the inner column, and the outer column are all rectangular steel pipes.

[0022] Furthermore, the crossbeam, the inner column, and the outer column are all made of ordinary carbon steel.

[0023] In the above technical solution, the support device for large components of rail vehicle bodies provided by this utility model has the following advantages compared with the prior art:

[0024] 1) Improve production efficiency and save manpower and time costs: The height and width of the device are adjustable, and the device is lightweight and easy to move and store. It has obvious noise reduction and vibration reduction effects, which meet the safe production of various types of subway car body steel structures. Moreover, the comfort of workers is increased, and the production efficiency is greatly improved. The device can be disassembled flexibly, which also improves the efficiency of workers' preparation work. It has multiple effects in one.

[0025] 2) Saves space: The device can be installed and dismantled quickly, occupies a small area, and achieves the most optimized process layout;

[0026] 3) Quality assurance: During production line processes, this device can be fixed on I-beams or placed on a flat ground, depending on the site requirements. The levelness of the device can be adjusted by using a top rod to ensure stability and guarantee the welding quality of large components. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0028] Figure 1 This is an isometric drawing of a support device for large components of a rail vehicle body disclosed in this utility model.

[0029] Figure 2 This is an isometric drawing of a column assembly for a support device for large components of a rail vehicle body, as disclosed in this utility model.

[0030] Figure 3 This utility model discloses an isometric drawing of the outer column of a support device for large components of a rail vehicle body;

[0031] Figure 4 This utility model discloses an isometric drawing of the outer column of a support device for large components of a rail vehicle body;

[0032] Figure 5 This is a simplified diagram of the force distribution of a support device for large components of a rail vehicle body disclosed in this utility model.

[0033] Figure 6 This utility model discloses a bending moment diagram for a support device for large components of a rail vehicle body;

[0034] Figure 7 This utility model discloses a shear force diagram for a support device for large components of a rail vehicle body;

[0035] Figure 8This utility model discloses a cross-sectional view of a crossbeam for a support device for large components of a rail vehicle body.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Base plate; 101. Mounting hole; 2. Rib plate; 3. Outer column; 4. Locking structure; 401. Pin; 402. First insertion hole; 403. Second insertion hole; 404. Anti-loss rope; 5. Inner column; 6. Support; 601. Support groove; 602. Through channel; 7. Crossbeam; 8. Top rod; 801. Slot; 9. Nylon pad. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0039] See Figure 1 , 2 As shown;

[0040] The utility model is a support device for large components of rail vehicle body. When supporting large components of the vehicle body, multiple units are set at intervals and used in combination. Generally, 3-5 units are used as a group to support large components of the vehicle body.

[0041] The support device includes a crossbeam 7 and two column assemblies. Of course, depending on the actual usage requirements, there can be more than two column assemblies; this embodiment only uses two as an example.

[0042] The column assembly includes an outer column 3 and an inner column 5;

[0043] The bottom end of the outer column 3 is provided with mounting holes 101 for fixing to the infrastructure, and the top end is fitted with an inner column 5. The inner column 5 can extend and retract along the vertical axis. A locking structure 4 is provided between the outer column 3 and the inner column 5. The height of the inner column 5 and the outer column 3 can be locked at any position through the locking structure 4 to meet the support height adjustment requirements.

[0044] The top of the inner column 5 is fixed to a support 6. The support 6 forms an upward-facing groove 601. The two ends of the support 6 are symmetrically formed with through channels 602 that communicate with the groove 601, so that the two column components can horizontally support the crossbeam 7 by moving away from each other or relative to each other. In other words, the relative distance between the two column components can be freely adjusted along the crossbeam to meet the requirements for adjusting the support width.

[0045] See Figure 2 As shown:

[0046] Preferably, the locking structure 4 includes a socket and a pin 401 that is plugged into and detached from the socket;

[0047] The insertion holes penetrate the outer column 3 and the inner column 5, and the insertion holes are evenly distributed along the height direction of the inner column 5. The pin 401 is inserted into the insertion hole of the outer column 3 and cooperates with the insertion holes at different positions on the inner column 5 to lock the height of the inner column 5.

[0048] Specifically, in this structure, the insertion holes include a first insertion hole 402 and a second insertion hole 403. Taking the outer column 3 as an example, two first insertion holes 402 are opened, and multiple second insertion holes 403 are opened on the inner column 5. The pin 401 is inserted into the first insertion hole 402 of the outer column 3. The first insertion hole 402 serves as a reference hole. The pin 401 cooperates with the second insertion holes 403 at different positions on the inner column 5, thereby locking the height of the inner column 5 and realizing the height adjustment of the support beam 7 of the column assembly.

[0049] See Figure 3 , 4 As shown:

[0050] Preferably, the cross-sections of the inner column 5 and the outer column 3 are both quadrilateral structures when projected onto the horizontal plane. Insertion holes are provided on the opposing surfaces of the inner column 5 and the outer column 3, making it convenient to insert the pin 401 in different directions during use, thus making it easy to use.

[0051] See Figure 2 As shown:

[0052] Preferably, to prevent the pin 401 from being lost, the outer column 3 is provided with a connecting hole. The connecting hole is connected to the pin 401 through an anti-loss rope 404. The pin 401 includes a plug part and a handle part. The plug part cooperates with the plug hole, and the handle part is used for hand gripping. A boss with a diameter larger than the plug hole is formed between the plug part and the handle part. The boss abuts against the surface of the outer column 3. A through hole is opened at the end of the handle part. One end of the anti-loss rope 404 is connected to the through hole, and the other end is connected to the connecting hole opened in the rib plate 2 circumferentially provided on the outer column 3. The anti-loss rope 404 can be an iron chain or other rope in the prior art.

[0053] See Figure 3 As shown:

[0054] Preferably, the bottom end of the outer column 3 is fixedly connected to the base plate 1, and the side surfaces of the outer column 3 are all connected to the base plate 1 through stiffening plates 2. The base plate 1 has mounting holes 101 at the positions corresponding to the stiffening plates 2.

[0055] Specifically, the bottom edge has a cross-shaped structure. The horizontal and vertical sections of the cross-shaped structure are perpendicular to the side surface of the outer column 3. The base plate 1 and the outer column 3 are fixedly connected by welding. In order to improve the support strength of the outer column 3, stiffening plates 2 are welded between the side surface of the outer column 3 and the base plate 1 to enhance the reliability of the connection between the base plate 1 and the outer column 3. The base plate 1 has mounting holes 101 corresponding to the positions of the stiffening plates 2. The mounting holes 101 are oblong holes. T-bolts are used to determine the position between the outer column 3 and the I-beams embedded in the ground in the oblong holes to fix the device. The outer column 3 can not only be fixed to the I-beams embedded in the ground through the plane of the base plate 1, but also can be placed on a flat ground to make the device stable.

[0056] See Figure 4 As shown:

[0057] Preferably, the support device further includes a top rod 8, which is screwed into the threaded hole of the support 6. One end of the top rod 8 is placed in the inner cavity of the inner column 5, and the other end is placed in the groove 601. Specifically, in this structure, a slot 80181 is opened at the top of the top rod 8. The top rod 8 is driven to rotate through the slot 80181 to adjust the height of the top rod 8 in the groove 601, which can further adjust the height of the support beam 7. In order to prevent the top rod 8 from detaching from the support 6, a support plate is fixed to the bottom of the top rod 8 to prevent the top rod 8 from falling off. In this structure, the top rod 8 is provided at the bottom of the groove 601, which can fine-tune the beam 7 to ensure that the beam 7 is flat. In use, first use a spirit level to place on the middle of the beam 7 to measure the flatness of the device. If one side of the beam 7 is low, the top rod 8 can be rotated upward to make fine adjustments and support the beam 7.

[0058] See Figure 1 As shown:

[0059] Preferably, the support device also includes a nylon pad 9. The nylon pad 9 is fixedly connected to the upper surface of the crossbeam 7. The nylon pad 9 contacts the steel structure of the vehicle body, protecting the steel structure of the vehicle body. In addition, the nylon pad 9 has good wear resistance, shock absorption, and noise reduction effects. It not only reduces friction and damage between the large parts of the vehicle body and the device (preventing scratches on the vehicle body), but also alleviates the vibration and impact during the grinding and welding process of the large parts of the vehicle body (underframe) by the operator, protecting the stability and safety of the large parts of the vehicle body and the device. Secondly, as a sound insulation pad, the nylon pad 9 can effectively reduce the sound and noise of the vehicle body falling onto the device, providing a quiet working and production environment.

[0060] Preferably, the crossbeam 7, inner column 5, and outer column 3 are all rectangular steel tubes made of ordinary carbon steel. Ordinary carbon structural steel with a carbon content of less than 0.38% is selected, primarily for manufacturing engineering structural components. This type of steel has a wide range of applications, moderate strength, good plasticity and toughness, and is easy to form and weld. Therefore, rectangular steel tubes are chosen as the main material for the support device. It has a large moment of inertia and section modulus, resulting in greater bending and resistance capabilities, which can reduce structural weight and lower costs.

[0061] See Figure 5-8 As shown:

[0062] The load-bearing stress analysis of the support device;

[0063] Considering the weight, distribution, and dimensions of major vehicle components, a stress analysis was performed on a set of support devices. A simplified diagram of the stress analysis calculation is shown below (e.g., Figure 5 As shown):

[0064] q is the uniformly distributed load of the weight of the large components of the vehicle body, which is a force (load) evenly distributed on the structure. Under the action of a uniformly distributed load, the load on each point is equal. The unit is N / M; L is the length of the rectangular tube; fc is the linear displacement of the rod axis in the direction perpendicular to the axis.

[0065] R Ay R By R is the support reaction force at points A and B; Ay =R By =qL / 2

[0066] ∑M A =0, ∑M B =0 The sum of the torques on the rectangular tube around points A and B is 0, the object is in equilibrium and does not rotate;

[0067] Formula for bending moment under uniformly distributed load;

[0068] Formula for shear force under uniformly distributed load;

[0069] Stress Analysis: Calculation and Analysis of the Bearing Capacity of the Device

[0070] The crossbeam 7 has a general length L = 3500 mm and a rectangular tube H = 120 cm;

[0071] B = 80mm, thickness = 5mm;

[0072] Calculation results: When q = 100 kg, the deflection fc = 1.12 mm;

[0073] When q = 1000 kg, the deflection fc = 11.2 mm;

[0074] In practical applications, the gravity q is evenly distributed on several beams, which together bear the weight of the large components of the vehicle body, meaning that the device meets the design requirements.

[0075] In the above technical solution, the method of using the support device for large components of a rail vehicle body provided by this utility model is as follows:

[0076] The inner column 5 and the outer column 3 form a double-layer telescopic structure, which are connected into one unit by the pin 4. The upper part of the inner column 5 is fixed with a support 6. The support 6 supports the crossbeam 7 through the groove 601. The bottom of the groove 601 is provided with a top rod 8, which can make fine adjustments to the crossbeam 7 to ensure the flatness tolerance. After the spacing of the column components of a set of support devices and the inner column 5 are adjusted to the required height, the inner and outer columns are connected by the pin 401 to realize the mutual fixation of the outer column 3 and the inner column 5. The two sets of support devices can store large components such as end walls, base frame ends, and bogies.

[0077] The bottom of the outer column 3 is fixedly connected to the I-beam in the ground infrastructure through the base plate 1 and the mounting hole 101, and the top of the inner column 5 supports the large components of the vehicle body through the crossbeam 7.

[0078] In use, the steel structure components of the vehicle body are placed on the crossbeam 7, which distributes their weight. In this structure, the inner column 5 and the outer column 3 work together with the locking structure 4 to achieve height adjustment of the support device in the vertical direction. The top of the inner column 5 supports the crossbeam 7 through the groove 601 of the bracket 6. By shifting the two column components and adjusting their relative distance, the width of the support device can be adjusted to meet the maximum width of 2800MM on both sides, and the shortest can meet the processing and storage of various small parts.

[0079] Secondly, because the height and width of the support device are adjustable, meaning the device can be freely extended and retracted, the overall device is lighter and more flexible. It does not require overhead cranes for transportation and can be moved manually, ensuring production safety. When the device is not needed for production, it can be dismantled and moved out of the site to facilitate the production of subsequent processes. Alternatively, the width can be adjusted at will, and the original height-adjustable support device can be transformed into a subway component storage rack (which can support large components on the ground). This device has multiple uses, adopts a universal chemical equipment design, saves materials, reduces economic costs, makes efficient use of space, optimizes process layout, saves manpower, and promotes stable production with high efficiency and high safety in the factory.

[0080] Furthermore, the design of this support device incorporates ergonomics theory, studying the coordination relationship between humans and the tooling system. By investigating various factors influencing this relationship, such as human activity levels, behavioral characteristics, motivation, and responses, the optimal human-machine coordination is sought. Based on this, an optimal tooling structure is designed to maximize the interaction between humans and the tooling system, ensuring the achievement of process objectives, meeting operability requirements, and guaranteeing safety, efficiency, and optimal performance during tooling use.

[0081] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A support device for large components of a rail vehicle body, characterized in that, include: Horizontal beam (7), at least two column assemblies; The column assembly includes an outer column (3), an inner column (5) fitted inside the outer column (3) and capable of extending and retracting along the vertical axis; and A locking structure (4) capable of locking the inner column (5) and the outer column (3) at any position; The outer column (3) has mounting holes (101) circumferentially opened at its bottom end for fixing to the infrastructure; The top of the inner column (5) is fixedly connected to a support (6); The support (6) has an upward-facing groove (601), and the two ends of the support (6) have symmetrical through channels (602) communicating with the groove (601) so that the two column assemblies can horizontally support the crossbeam (7) with opposite or relative displacement.

2. The support device for large components of a rail vehicle body according to claim 1, characterized in that... ； The locking structure (4) includes a socket and a pin (401) that is plugged into and detached from the socket; The insertion hole penetrates the outer column (3) and the inner column (5), and the insertion hole is evenly distributed along the height direction of the inner column (5). The pin (401) is inserted into the insertion hole of the outer column (3) and cooperates with the insertion holes at different positions on the inner column (5) to lock the height of the inner column (5).

3. The support device for large components of a rail vehicle body according to claim 2, characterized in that... ； The cross-sections of the inner column (5) and the outer column (3) are both quadrilateral structures when projected onto the horizontal plane, and the insertion holes are provided on the opposite surfaces of the inner column (5) and the outer column (3).

4. The support device for large components of a rail vehicle body according to claim 2, Its characteristics are: The outer column (3) is provided with a connection hole, which is connected to the pin (401) by an anti-loss rope (404).

5. The support device for large components of a rail vehicle body according to claim 2, Its characteristics are: The bottom end of the outer column (3) is fixedly connected to the base plate (1). The side surfaces of the outer column (3) are all connected to the base plate (1) through stiffeners (2). The base plate (1) is provided with mounting holes (101) corresponding to the positions of the stiffeners (2).

6. The support device for large components of a rail vehicle body according to claim 1, characterized in that... ； It also includes a push rod (8), which is helically driven by the threaded hole of the support (6). One end of the push rod (8) is placed in the inner cavity of the inner column (5), and the other end is placed in the groove (601).

7. The support device for large components of a rail vehicle body according to claim 6, characterized in that... ； The top of the push rod (8) has a slot (81) for driving the push rod to rotate.

8. The support device for large components of a rail vehicle body according to claim 1, characterized in that... ； It also includes a nylon pad (9), which is fixed to the upper surface of the crossbeam (7).

9. The support device for large components of a rail vehicle body according to claim 1, characterized in that; The crossbeam (7), the inner column (5), and the outer column (3) are all rectangular steel pipes.

10. The support device for large components of a rail vehicle body according to claim 1 or 9, characterized in that... ； The crossbeam (7), the inner column (5), and the outer column (3) are all made of ordinary carbon steel.

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